Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Property and Equipment Useful Lives

Depreciation is computed on a straight-line basis over the estimated useful life of the respective assets, which are summarized as follows:

Property and equipment category	Useful life
Computer equipment and software	3 years
Laboratory equipment	6 years
Furniture and fixtures	10 years
Leasehold improvements	Lesser of remaining lease term or life of asset

Property and equipment consisted of the following as of: 

	December 31,
($ in thousands)	2016			2015
Laboratory equipment	$	1,429		$	1,416
Computer equipment and software	313			296
Furniture and fixtures	44			53
Leasehold improvements	1,228			903
Construction-in-process	36			156
Total property and equipment, gross	3,050			2,824
Less: Accumulated depreciation	(1,561		)	(1,242		)
Total property and equipment, net	$	1,489		$	1,582